Age of Ag–Pb–Zn mineralization, Keno Hill – Galena Hill area, Yukon Territory

Whole-rock K–Ar model ages of Keno Hill quartzite from small stockwork zones adjacent to Ag–Pb–Zn veins (Husky and Keno deposits) indicate that mineralization occurred at about 87 Ma. Regionally metamorphosed country rocks more distant from stockwork zones have potassium–argon model ages that are sl...

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Bibliographic Details
Published in:Canadian Journal of Earth Sciences
Main Authors: Sinclair, A. J., Tessari, O. J., Harakal, J. E.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1980
Subjects:
General Earth and Planetary Sciences
Yukon
Keno Hill
Galena Hill
Online Access:http://dx.doi.org/10.1139/e80-109
http://www.nrcresearchpress.com/doi/pdf/10.1139/e80-109
Description
Summary:Whole-rock K–Ar model ages of Keno Hill quartzite from small stockwork zones adjacent to Ag–Pb–Zn veins (Husky and Keno deposits) indicate that mineralization occurred at about 87 Ma. Regionally metamorphosed country rocks more distant from stockwork zones have potassium–argon model ages that are slightly but significantly older, indicating that mineralization postdated the main phase of Late Cretaceous regional metamorphism.

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